Prediction of Ground Vibration Generated by Vertical Track Irregularity Using 2.5D FEM
The track irregularities have been coupled into 2. 5D finite element model in the wave-number domain. At present ,the smooth track could only be calculated but the track irregularities en -danger the running safety and stability of the trains. The car body has been simplified into four mu -tual independence wheels with secondary suspension in the Car -track-ground model. The embankment and ground were presented by employing a 2. 5-dimensional finite element method. As an external force, the dynamic wheel -rail forces will be eliminated for stiffness matrixes coupled in the wave-number domain. The dynamic response of the ground surface in the wave -number domain will be translated into time domain by IFFT. Frequency of track irregularities was a dominant frequency for train vibration and it would be greater as the speed grows.
Chang CHAO Xuecheng BIAN Yunmin CHEN
Department of Civil Engineering , MOE, Key Laboratory of Soft Soils and Geoenvironmental Engineering,Zhejiang University,Hangzhou 310058,China
国际会议
5th International Symposium on Environmental Vibration(第五届环境振动国际研讨会)
成都
英文
166-172
2011-10-20（万方平台首次上网日期，不代表论文的发表时间）